Appendix VI. rii'7 Motor Dynamos.—These are true transformers of direct urrent, and consist of motor and dynamo on one bed. The . 9SO. ?V\ / V^-;VV Vc ; A/\/\ /\/\/\ A / V X X * X X X A / \ / v / \/ \ / \ / \ / V/ \ V V v V A/ \/ V N -current EC, Fig, 985, driv^ the motor M/which is coupled to a generator D produdng a current E c, and the transformation may bt whatever is required for the particular purpose.